Home / 11,787.40-17,678.94-4,767.04

Finding the Fourth Proportional to 11,787.40, 17,678.94 and 4,767.04

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Solution

The fourth proportional to 11,787.40, 17,678.94 and 4,767.04 is: 7,149.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,787.40 : 17,678.94 = 4,767.04 : x
  2. Step 2: Convert to fraction form
    11,787.40/17,678.94 = 4,767.04/x
  3. Step 3: Cross multiply
    11,787.40x = 17,678.94 × 4,767.04
  4. Step 4: Simplify right side
    11,787.40x = 84,276,214.14
  5. Step 5: Solve for x
    x = 84,276,214.14/11,787.40
  6. Step 6: Final answer
    x = 7,149.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.